WO2017111413A1 - Lighting module, and lighting apparatus having same - Google Patents

Abstract

An embodiment discloses a lighting module. The lighting module disclosed in an embodiment comprises: a light-emitting module having a printed circuit board and a plurality of light-emitting devices; and a cover having a cover body disposed on the printed circuit board and a plurality of lens parts disposed on the light-emitting devices. The plurality of lens parts include a concave recess, a light-incident surface around the recess and a light-emitting surface having a convex-curved surface, wherein gaps in a first axial direction are arranged more narrowly than gaps in a second axial direction. Two or more of the light-emitting devices disposed in the respective lens parts are arranged in the first axial direction. A floor of the recess has a longer length in the first axial direction than in the second axial direction with reference to the floor centre of the recess; and the light-incident surface of the lens parts has a longer length in the first axial direction than in the second axial direction, has a convex-curved surface in the first axial direction, and can include a concave part in which a curved surface in the second axial direction is depressed towards the recess.

Description

Lighting module and lighting device having same

Embodiments relate to a lighting module and a lighting device having the same.

In general, when a lighting device using a lamp is turned on, high heat is generated. This heat causes the lamp chamber to heat up and shorten the life of the lamp and various components. In the case of a street lamp as an example, when the lamp overheats, the street lamp may be controlled by turning off the lamp at a certain temperature to prevent a failure, but the situation in which the street lamp is turned off does not affect the function of the street lamp itself. It is a problem because it is not.

In particular, when manufacturing a street light using LED (Light Emitting Diode), which has been spotlighted as a high-efficiency light source, it is very necessary to improve the heat dissipation structure in order to efficiently dissipate heat generated from the light emitting diodes.

In addition, the existing street light is difficult to heat dissipation by installing a globe covering the whole in a round shape, as can be seen in the street lamp using mercury lamp or sodium lamp even when using LED There is a disadvantage in that it is designed uniformly without considering the optical properties, for example, light distribution properties, illuminance and uniformity. Therefore, there is a need to develop a new LED lighting device that can solve this problem.

In addition, the device used in the exposed state, such as a street light, there is a risk of accidents caused by a short circuit if the waterproof is not well, there is a great need to develop a safe LED lighting device that does not cause leakage even when used in bad conditions.

The embodiment provides an illumination module that can reduce optical interference between a plurality of lens units.

The embodiment provides a lighting module having different lengths in two axial directions in which each of the plurality of lens units disposed on the cover is orthogonal to the center of the lens unit.

The embodiment provides a light emitting module in which at least two light emitting devices are disposed under an entrance surface of each of the lens units of the cover.

The embodiment provides a light emitting module having a plurality of light emitting devices driven by an AC power source between a cover and a heat sink.

The embodiment provides a lighting module having a heat dissipation pad disposed between the heat dissipation plate and the printed circuit board to improve heat dissipation efficiency.

The embodiment provides an illumination module that arranges a waterproof frame around the light emitting module, thereby preventing moisture from penetrating into the light emitting module.

The embodiment provides a lighting module provided with a waterproof protrusion on the waterproof frame to pressurize the heat sink and the cover to prevent moisture from penetrating into the printed circuit board.

The embodiment provides a lighting module having a heat dissipation channel on the outside of the heat sink and a lighting device having the same.

An embodiment provides a lighting apparatus in which a plurality of lighting modules are arranged.

An illumination module according to an embodiment includes a light emitting module having a plurality of light emitting elements on a printed circuit board and a printed circuit board; And a cover having a cover body disposed on the printed circuit board and a plurality of lens parts disposed on the light emitting element, wherein the plurality of lens parts are disposed in a first axis direction narrower than an interval in a second axis direction. And each of the plurality of lens parts includes an exit surface having a concave recess, an entrance surface around the recess, and a curved surface having a convex surface. And at least one is disposed, the bottom of the recess has a length in a first axial direction longer than a length in the second axial direction with respect to a center of a bottom of the recess, and an exit surface of the lens portion is a length in a first axial direction. Is longer than a length in the second axial direction, the exit surface may have a curved surface convex in the first axial direction, and the curved surface in the second axial direction may have a concave portion concave in the recess direction.

Illumination module according to an embodiment, the heat sink having a plurality of heat radiation fins; A light emitting module having a printed circuit board on the heat dissipation plate and a plurality of light emitting elements on the printed circuit board; And a cover having a cover body disposed on the printed circuit board and a lens unit disposed on the light emitting device, wherein the printed circuit board has a length in a first axis direction longer than a length in a second axis direction. At least two are disposed in each of the plurality of lens units, M lens units are arranged in the first axis direction and N dogs in the second axis direction, wherein M≥2, N≥2, M> N, The plurality of lens parts have a spacing in the first axis direction narrower than the spacing in the second axis direction, and each of the plurality of lens parts has a concave recess, an entrance surface around the recess, and an exit surface having a convex curved surface. And at least two light emitting elements disposed in each lens unit in a first axial direction, and the bottom of the recess has a length in a first axial direction with respect to the center of the bottom of the recess. Longer than the length in the second axis direction, The exit surface of the lens unit has a length in the first axial direction longer than the length in the second axial direction, and the exit surface has a convex curved surface in the first axial direction, and at least one of the recesses on both sides of the second axial direction. It may have a recessed concave in the direction.

According to an embodiment, two to four light emitting devices may be disposed in each lens unit.

In example embodiments, the light emitting devices disposed in the lens units may have more outer columns than the inner columns based on the first axis direction passing through the bottom center of the recess.

In example embodiments, a distance between the lens units disposed in the first axial direction may be smaller than a height of the lens unit.

In example embodiments, a distance between the lens units disposed in the first axis direction may be smaller than a length in the first axis direction of the lens unit.

In example embodiments, the lens units may have the same interval in the first axis direction and may be different from each other in the second axis direction.

According to an embodiment, the light incident at a first angle through the edge region of the incident surface of the lens unit is emitted at a second angle to the edge region of the exit surface, and the first angle is horizontal to the bottom surface of the cover body. An angle incident based on one axis, and the second angle is an angle emitted based on an axis horizontal to the upper surface of the cover body, and the second angle may be larger than the first angle.

According to an embodiment, the lens units adjacent in the first axis direction may be spaced apart from each other with an angle smaller than the second angle with respect to the horizontal axis.

According to the embodiment, the printed circuit board may have a circuit unit for driving the light emitting device.

According to an embodiment, a heat sink having a heat dissipation fin at a lower portion and a recess area at an upper portion thereof; And a waterproof frame disposed outside the printed circuit board on the heat sink, wherein the printed circuit board is disposed in a recessed area of the heat sink, and the waterproof frame may be disposed between the heat sink and the cover.

According to an embodiment, the waterproof frame may include a first waterproof protrusion protruding in the cover direction and a second waterproof protrusion protruding in the heat sink direction. The heat sink may include a first guide rib disposed between the waterproof frame and the printed circuit board, and a second guide rib disposed outside the waterproof frame and the cover.

According to the embodiment, it may include a heat radiation pad disposed between the printed circuit board and the heat sink. The heat sink and the printed circuit board may have a length in a first axial direction longer than a length in a second axial direction.

According to an embodiment, the thickness of the cover body may be smaller than the height of the recess and greater than the thickness of the light emitting device.

According to an embodiment, the exit surface of each lens unit may have a symmetrical shape with respect to a second axis direction passing through the bottom center of the recess.

According to an embodiment, the concave portion may be disposed on at least one side of both sides of the emission surface in the second axial direction.

According to an embodiment, the recesses are adjacent to the cover body and are disposed on both sides of the exit surface in the second axial direction, respectively, and the depths of the recesses disposed on both sides of the exit surface may be different.

The embodiment can reduce optical interference between the lens units on the light emitting module.

The embodiment provides a light emitting device driven by an AC power supply, and does not require a separate converter.

According to the embodiment, the heat dissipation plate and the heat dissipation pad may be disposed under the light emitting module to improve heat dissipation efficiency.

According to the embodiment, the entire area of the printed circuit board may be adhered to the heat dissipation pad, thereby improving heat dissipation efficiency.

According to the embodiment, the liquid may be prevented from penetrating by the heat dissipation frame having elastic force between the cover and the heat dissipation plate in the outer region of the light emitting module.

The embodiment can improve the heat dissipation efficiency by providing a heat dissipation passage on the outside of the lighting module.

The embodiment may arrange the rows of the light emitting elements of the plurality of lighting modules at equal intervals, thereby not affecting the light distribution.

The embodiment can improve the reliability of the lighting module and the lighting device.

1 is an exploded perspective view of a lighting module according to an embodiment.

FIG. 2 is a perspective view illustrating a heat sink of the lighting module of FIG. 1. FIG.

3 is an exploded perspective view of a heat sink and a waterproof cap of the lighting module of FIG. 1.

4 is a cross-sectional view of the coupling side of the heat sink and the waterproof cap of FIG.

5 is a side cross-sectional view illustrating the heat dissipation cap of FIG. 3.

6A is a perspective view illustrating a waterproof frame of the lighting module of FIG. 1.

6B is a cross-sectional view taken along the line B-B 'of the waterproof frame of FIG. 6A.

7 is a view illustrating a light emitting module and a cover of the lighting module of FIG. 1.

8 is an exploded perspective view of a heat sink and a cover to which a light emitting module of the lighting module of FIG. 1 is coupled.

9 is a combined perspective view of the lighting module of FIG.

10 is a perspective view illustrating a light emitting device in the lighting module of FIG. 9.

FIG. 11 is a C-C side cross-sectional view of the lighting module of FIG. 10.

12 is a sectional view taken on the D-D side of the lighting module of FIG.

FIG. 13 is a view illustrating a lens part of a cover in detail in the lighting module of FIG. 11.

14 is another example of a light emitting module in the lighting module of FIG. 11.

FIG. 15 is a view illustrating an arrangement example of a lens unit and a light emitting device of a cover in the lighting module of FIG. 14.

FIG. 16 is a view illustrating another example of a light emitting device disposed under a lens unit of a cover in the lighting module of FIG. 14.

17 is a view showing another arrangement of the lens unit of the cover in the lighting module according to the embodiment.

18 is a side cross-sectional view of the lighting module of FIG. 10.

19 is a partial side cross-sectional view of the lighting module of FIG. 10.

20 is a plan view of the lighting module of FIG. 10.

21 is a bottom view of the lighting module of FIG. 10.

FIG. 22 is a lighting device in which the lighting modules of FIG. 10 are arranged in one row.

FIG. 23 is an example of a lighting device having a plurality of lighting modules of FIG. 10.

24 is a view illustrating an air flow path of the lighting apparatus of FIG. 23.

Hereinafter, with reference to the accompanying drawings will be described with reference to the accompanying drawings a preferred embodiment of a light emitting module, a lighting module or a lighting device having the same according to the embodiment. The terms to be described below are terms defined in consideration of functions in the present embodiment, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification. In addition, the following examples are not intended to limit the scope of the present invention but merely presented by way of example, and there may be various embodiments implemented through the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. On the other hand, the term "lighting module or lighting device" used in the present specification is previously used as a term used to collectively refer to a device similar to a street lamp, various lamps, an electric signboard, a headlamp, and the like, used for outdoor lighting.

1 is an exploded perspective view showing a lighting apparatus according to the embodiment, Figure 2 is a perspective view showing a heat sink of the lighting module of Figure 1, Figure 3 is an exploded perspective view of the heat sink and the waterproof cap of the lighting module of Figure 1, Figure 4 3 is a side cross-sectional view of the heat sink and the waterproof cap of Figure 3, Figure 5 is a side cross-sectional view showing the heat dissipation cap of Figure 3, Figure 6a and 6b is a view showing a waterproof frame of the lighting module of Figure 1, Figure 7 1 is a view illustrating a light emitting module and a cover of the lighting module of FIG. 1, and FIG. 8 is an exploded perspective view of a heat sink and a cover to which the light emitting module of the lighting module of FIG. 1 is coupled.

1 to 8, the lighting module 100 is disposed on the heat sink 110, the first region of the heat sink 110, and has a light emitting module 170 having a printed circuit board 171 and a light emitting device 173. ), A waterproof frame 140 and a cover 190 disposed on the light emitting module 170 may be disposed outside the first region of the heat sink 110.

The lighting module 100 may include a heat dissipation pad 160 disposed between the heat dissipation plate 110 and the printed circuit board 171. The lighting module 100 may include a waterproof cap 105 having a cable hole and coupled to a portion of the heat sink 110.

The heat sink 110 may include a metal material, and the metal material may include a metal or an alloy having excellent heat dissipation characteristics. The heat sink 110 may be formed of any one of, for example, Ag, Al, Au, Cr, Co, Cu, Fe, Hf, In, Mo, Ni, Si, Sn, Ta, Ti, W, and an optional alloy of these metals. Can be.

The heat dissipation plate 110 may include a plurality of heat dissipation fins 113, and the plurality of heat dissipation fins 113 may increase heat dissipation area and improve heat dissipation efficiency. The heat sink 110 may include a plurality of case fastening parts 118 and 119 to be fastened to a case (not shown).

The heat sink 110 may include a heat sink 111, a plurality of heat sink fins 113 disposed under the heat sink 111, a recess region 112 on the heat sink 111, and the heat sink. And a plurality of case fastening parts 118 and 119 disposed at the outer portion of the 111.

As illustrated in FIG. 2, the heat sink 110 may have a length X1 in the first axial direction X longer than a width Y1 in the second axial direction Y. The first axis direction X may be a length direction and may be a direction orthogonal to the second axis direction Y. FIG. The length (X1) of the heat sink 110 may be more than twice the width (Y1), for example, the length (X1) is formed long in the range of 2 to 4 times the width (Y1), such a length ( X1) and width Y1 may vary depending on the type of illumination.

The recess region 112 of the heat sink 110 may have a bottom deeper or stepped than the outer circumferential region. The recess region 112 of the heat sink 110 may be a concave region or a stepped region. The heat dissipation pad 160 and the printed circuit board 171 are disposed in the recess region 112. The bottom of the recess region 112 may be disposed on a flat surface. Since the bottom of the recess region 112 of the heat sink 110 is formed to have a flat surface, the bottom surface of the heat radiation pad 160 may be in surface contact with the bottom of the recess region 112, and the heat radiation pad ( The conduction efficiency of heat conducted from 160 can be improved.

The plurality of heat dissipation fins 113 may protrude downward from the heat dissipation plate 110, for example, the heat dissipation element 111 in a vertical direction, and may be arranged at predetermined intervals. For example, as shown in FIG. 21, the heat dissipation fins 113 may be arranged in a dot matrix or lattice form. The spacing between the plurality of heat dissipation fins 113 may be arranged at regular intervals or at irregular intervals. The heat dissipation fins 113 are described as being arranged at regular intervals for uniform heat dissipation. Here, as shown in FIG. 21, the cable 101 may be freely drawn out in the X-axis direction or the Y-axis direction through the plurality of heat dissipation fins 113. Each of the heat dissipation fins 113 may have a columnar shape, for example, a polygonal or circular columnar shape. Each of the heat dissipation fins 113 may be formed in a shape in which the thickness or width gradually decreases from the heat dissipation member 111, but is not limited thereto.

1 and 2, the radiator 111 may include a plurality of guide ribs 11, 12, 13, 14, and 15 on the outer side of the first region. The plurality of guide ribs 11, 12, 13, 14, and 15 may function as sidewalls around the recess area 112.

The plurality of guide ribs 11, 12, 13, 14, and 15 are disposed outside the first guide rib 11 and the first guide rib 11 disposed around the recess area 112. Second guide ribs 12, 13, 14, and 15 are included. The first guide rib 11 may protrude to a predetermined height around the recess area 112 from a horizontal bottom of the recess area 112. For example, the first guide rib 11 may be formed in a ring shape or a frame shape surrounding the circumference of the recess area 112. The first guide rib 11 includes a plurality of convex portions 11A and concave portions 11B. The plurality of convex portions 11A are disposed along the circumference of the recess region 112 and protrude convexly toward the center of the recess region 112. The concave portion 11B is disposed between the convex portions 11A. Each of the convex parts 11A may provide a space of the fastening part 121 for fastening the fastening means.

The heat dissipation pad 160 and the printed circuit board 171 of the light emitting module 170 are coupled to the recess region 112. The first guide rib 11 is disposed to correspond to side surfaces of the heat dissipation pad 160 and the printed circuit board 171. The first guide rib 11 may be disposed between the printed circuit board 171 and the waterproof frame 140. In addition, the first guide rib 11 may be selectively in contact with each side of the printed circuit board 171. The convex portion 11A and the concave portion 11B of the first guide rib 11 may prevent the heat dissipation pad 160 and the printed circuit board 171 from rotating or disengaging. The recess region May be combined with components coupled to 112.

An upper end of the first guide rib 11 may be disposed at a height lower than an upper surface of the printed circuit board 171. Accordingly, the first guide rib 11 may press the printed circuit board 171 toward the heat dissipation plate 110 when the second fastening means 109 is fastened.

The second guide ribs 12, 13, 14, and 15 are disposed outside the first guide rib 11, as shown in FIGS. 2 and 8. The second guide ribs 12, 13, 14, and 15 are disposed outside the waterproof frame 140 and the cover 190. The second guide ribs 12, 13, 14, and 15 guide the waterproof frame 140 and the cover 190. The second guide ribs 12, 13, 14, and 15 include a plurality of ribs spaced apart from each other. The second guide ribs 12, 13, 14, and 15 may include first and second ribs 12 and 13 facing each other on both sides of the first axial direction X of the heat sink 111, and the heat sink. Third and fourth ribs 14 and 15 facing each other on both sides of the second axis direction Y of the 111 are included. Each of the first and second ribs 12 and 13 has a straight length equal to the width Y1 of the second axial direction Y of the heat sink 111, and the waterproof frame 140 and the cover ( 190 to cover the outside. Each of the third and fourth ribs 14 and 15 may have a length smaller than the length X1 in the first axial direction of the heat sink 111. For example, each of the third and fourth ribs 14 and 15 may be formed to have a length equal to or less than 1/2 of the length X1 in the first axial direction of the heat sink 111, but is not limited thereto. Each of the third and fourth ribs 14 and 15 may be disposed in plural.

The case fastening parts 118 and 119 are formed on the outer sides of the first and second ribs 12 and 13 opposite to each other. For example, a plurality of first case fastening portions 118 are disposed outside the first ribs 12, and a plurality of second case fastening portions 119 are disposed outside the second ribs 13. The first and second case fastening portions 118 and 119 may be formed to have a stepped structure lower from an upper end of the first and second ribs 12 and 13. The first and second case fastening parts 118 and 119 protrude from opposite sides of the heat sink 111.

The printed circuit board 171 is disposed on the center area of the heat sink 110. In the center area of the heat dissipation plate 110, a recess area 112 may be formed to allow the printed circuit board 171 to be inserted therein. A heat dissipation pad 160 may be disposed between the heat dissipation plate 110 and the printed circuit board 171. The heat dissipation pad 160 and the printed circuit board 171 may be stacked in the recess region 112.

The waterproof frame 140 may be coupled to an upper circumference of the heat dissipation plate 110. The waterproof frame 140 may be coupled to an area between the first guide rib 11 and the second guide ribs 12, 13, 14, and 15. The waterproof frame 140 may be disposed between the heat sink 110 and the cover 190.

The heat sink 110 may include a plurality of cover fastening portions 121. The plurality of cover coupling parts 121 may be disposed in different areas among the areas between the first guide ribs 11 and the second guide ribs 12, 13, 14, and 15, respectively. The plurality of cover coupling parts 121 may have a stepped structure lower than upper ends of the first guide ribs 11 and the second guide ribs 12, 13, 14, and 15. Fastening holes 12A may be disposed in the cover fastening portions 121. The fastening holes 12A of the cover fastening part 121 are disposed at positions corresponding to the fastening holes 42 of the waterproof frame 140 and the fastening holes 99 of the outer portion of the cover 190, respectively. The two fastening means 109 can be fastened to the fastening holes 42 and 99. The second fastening means 109 includes a member such as a screw or rivet.

2, 3, and 18, the waterproof cap 105 may be coupled to the recessed region 112 of the heat sink 111. The waterproof cap 105 may have a cable hole 106 and may be coupled to the first groove 114 of the heat dissipation plate 110. The recess area 112 may include a first groove 114 and a second groove 115. The first groove 114 may be coupled to the waterproof cap 105, the second groove 115 may be connected to the first groove 114, and a second connector 107 may be disposed. The waterproof cap 105 may be coupled to the circumference of the cable 101. The first groove 114 and the second groove 115 may be disposed in an area lower than the bottom of the heat sink 111 or the bottom of the recess area 112. The first groove 114 and the second groove 115 are disposed inside the heat sink 111 and are disposed in a concave shape with respect to the bottom of the recess region 112. The first groove 114 may be disposed in a stepped structure in which the width of the upper portion is wider than the width of the lower portion. Accordingly, the structure of the first groove 114 may provide a long penetration path of moisture.

The waterproof cap 105 may include a rubber material and may be coupled to the first groove 114. As shown in FIG. 5, the waterproof cap 105 includes a first waterproof structure 51 and a second waterproof structure 52, and the first waterproof structure 51 and the second waterproof structure 52 have upper and lower ends. It may include a stepped structure having a different width of the lower portion. For example, the waterproof cap 105 may have a shape in which the upper width C1 of the first waterproof structure 51 is wider than the lower width C2 of the second waterproof structure 52. The first groove 114 may be formed in a structure that can be inserted into the outer shape of the waterproof cap 105. The width C1 of the first waterproof structure 51 of the waterproof cap 105 may be gradually narrowed toward the lower direction, and the width C2 of the second waterproof structure 52 may gradually become wider toward the upper direction. Can be. Here, since the lower circumference of the second waterproof structure 52 is spaced apart from the lower circumference of the first waterproof structure 51 by a predetermined distance C3, the second waterproof structure 52 and the first waterproof structure 51 are separated from each other. The outer region in between may be provided in a stepped structure. As shown in FIGS. 3 and 4, the waterproof cap 105 may be fitted into the first groove 114. A lower portion of the first groove 114 may be formed with a hole 114A penetrating through the heat sink 110, and the second waterproof structure 52 of the waterproof cap 105 is coupled to the hole 114A. do. The lower surface of the waterproof cap 105 may be exposed to the lower surface of the heat sink (110).

Here, at least one of the outer surface of the waterproof cap 105 or the surface of the first groove 114 may include a protrusion or groove structure to prevent moisture penetration. For example, the waterproof cap 105 may include one or a plurality of ring protrusions 5 and 6. The ring protrusions 5 and 6 may be disposed in at least one of the first waterproof structure 51 and the second waterproof structure 52. The waterproof cap 106 may include, for example, a first ring protrusion 5 on the surface of the first waterproof structure 51 and a second ring protrusion 6 on the surface of the second waterproof structure 52.

The first ring protrusion 5 may be formed in a ring shape having different outer diameters, and the second ring protrusion 6 may be formed in a ring shape having a smaller outer diameter than the outer diameter of the first ring protrusion 5. Can be. The first and second ring protrusions 5 and 6 may be in close contact with the surface of the first groove 114 with a predetermined elasticity. The first ring protrusion 5 of the first waterproof structure 51 may have an outer diameter greater than the outer diameter of the second ring protrusion 6 of the second waterproof structure 52.

The cable 101 is disposed in the first groove 114. A cable hole 106 may be disposed in the center area of the waterproof cap 105, and a third ring protrusion 7 may be disposed on the surface of the cable hole 106. The third ring protrusion 7 may be formed of a plurality of rings having the same inner diameter. The plurality of third ring protrusions 7 may be arranged in a vertical direction, and may be in close contact with the surface of the cable 101 with elastic force. Accordingly, the waterproof cap 105 may prevent moisture from penetrating through the cable hole 106 and the first groove 114. In the first and second waterproof structures 51 and 52 of the waterproof cap 105, the regions 54 and 55 between the third ring protrusions 7 in the vertical direction are outside the third ring protrusions 7. It may have a concave shape in the direction, it may have a larger width than the gap between the third ring projection (7). The uppermost protrusion of the third ring protrusion 7 may be disposed above the cable hole 106 than the regions 54 and 55.

The waterproof cap 105 may include a guide groove 106A connected to the cable hole 106. The direction of the guide groove 106A in the waterproof cap 105 may be disposed in a direction in which the guide groove 106A is connected to the second groove 115. Accordingly, when the cable 101 is inserted into the cable hole 106 of the waterproof cap 105, the cable 101 is bent along the guide groove 106A and the second connector disposed in the second groove 115. 107. The second groove 115 may be formed to a depth smaller than the depth of the first groove 114 having the hole 114A. The second groove 115 may be formed in a concave shape that does not penetrate the heat sink 110.

The waterproof cap 105 may include a locking protrusion 106B, and the heat dissipation plate 11 may include a locking jaw 114B adjacent to the first groove 114. The locking protrusion 106B may be coupled to the locking jaw 114B to prevent rotation. The locking protrusion 106B protrudes from the waterproof cap 105 in the direction of the second groove 115. The locking protrusion 106B protrudes from the first waterproof structure 51 toward the second groove 115. The locking protrusion 106B may be inserted between the locking jaws 114B extending between the first groove 114 and the second groove 115 to prevent the waterproof cap 105 from rotating. The locking jaw 114B may protrude from the heat sink 111 to an area between the first groove 114 and the second groove 115.

1 and 6b, the waterproof frame 140 may be coupled on the heat sink (110). The waterproof frame 140 includes a pad hole 141 therein, and the pad hole 141 may be opened to allow the heat radiation pad 160 to be inserted therein. The heat dissipation pad 160 may be inserted through the pad hole 141.

The waterproof frame 140 includes a protrusion 41A protruding in the center direction of the pad hole 141 and a recess 41B recessed outside of the protrusion 41A. The protrusion 41A and the recess 41B may be disposed along the first guide rib 11 of the heat sink 110. Here, the heat dissipation pad 160 is disposed in the recess region 112 of the heat dissipation plate 110 through the pad hole 141, and the first guide rib 11 is disposed on the heat dissipation pad 160 and the waterproof. It is disposed in the area between the frames 140.

As illustrated in FIGS. 1, 6A and 6B, the waterproof frame 140 may include waterproof protrusions 145 and 146. The waterproof protrusions 145 and 146 may be disposed in an area between the first guide rib 11 and the second guide ribs 12, 13, 14, and 15. The waterproof protrusions 145 and 146 may include a first waterproof protrusion 145 protruding from the waterproof frame 140 toward the lower surface of the cover 190 and a second waterproof protrusion protruding toward the upper surface of the heat sink 110. 146). The first and second waterproof protrusions 145 and 146 protrude in opposite directions to each other. The first and second waterproof protrusions 145 and 146 may be disposed to overlap each other in the vertical direction. Since the first and second waterproof protrusions 145 and 146 are disposed to overlap each other in the vertical direction, the waterproof effect may be maximized. Each of the first and second waterproof protrusions 145 and 146 may be formed in a single waterproof structure or a double waterproof structure according to the number thereof. For example, the first and second waterproof protrusions 145 and 146 may have a double waterproof structure. At least one or both of the first and second waterproof protrusions 145 and 146 may be formed in a continuous ring structure along the circumference of the first guide rib 11. The first and second waterproof protrusions 145 and 146 may be in contact with the cover 19 and the heat dissipation plate 110. When the cover 190 is fastened to the first and second waterproof protrusions 145 and 146, the first and second waterproof protrusions 145 and 146 provide elasticity and repulsive force to an interface between the cover 190 and the heat dissipation plate 110, thereby effectively performing waterproofing.

18 and 19, the bottom surface of the cover 190 and the top surface of the heat dissipation plate 110 may be in contact with each other. Accordingly, since the cover 190 and the heat dissipation plate 110 are in contact with each other, the penetration of moisture through the outer interface can be suppressed.

1, 7 and 8, the waterproof frame 140 is disposed on the first region of the heat sink 110. The waterproof flame 140 includes a plurality of cover fasteners 142 on the outer circumference. The cover fastening part 142 may be provided with a fastening hole 42 for fastening the fastening means.

The cover fastening part 142 of the waterproof frame 140 is disposed at a position corresponding to the cover fastening part 121 of the heat sink 110. When the cover 190 is fastened by the second fastening means 109, the waterproof frame 140 is fastened in close contact with the heat sink 110. The waterproof frame 140 may suppress the penetration of moisture through an interface between the waterproof frame 140 and the heat sink 110. In addition, the first and second waterproof protrusions 145 and 146 disposed on the upper and lower surfaces of the waterproof frame 140 may block the penetration of moisture.

As another example, the waterproof frame 140 may not include the waterproof protrusions 145 and 146, and the waterproof protrusion may be disposed on the upper surface of the heat sink 110 and the lower surface of the cover 190. The waterproof protrusions disposed on the upper surface of the heat sink 110 and the lower surface of the cover 190 may press the upper surface and the lower surface of the waterproof frame 140 to prevent moisture penetration. As another example, a waterproof ring may be provided on an upper surface of the heat sink 110 and a lower surface of the cover 190 to be coupled between the first and second waterproof protrusions 145 and 146 of the waterproof frame 140.

As another example, the first waterproof protrusion 145 may be disposed on at least one of an upper surface of the waterproof frame 140 and a lower surface of the cover 190, and the second waterproof protrusion 146 is waterproof with the heat sink 110. It may be formed on at least one of the lower surface of the frame 140.

18 is a side cross-sectional view of the lighting module of FIG. 10. 1 and 18, the heat radiation pad 160 is disposed between the heat sink 110 and the printed circuit board 171. The heat dissipation pad 160 is inserted into the recess region 112 of the heat dissipation plate 110. The heat dissipation pad 160 may include a resin material, for example, a silicon material. Since the heat dissipation pad 160 is a crimpable elastic material, the contact area with the printed circuit board 171 may be increased during the crimping. Accordingly, the heat conducted from the printed circuit board 171 may be uniformly conducted and conducted to the heat sink 110. The heat dissipation pad 160 may have a thickness thinner than that of the printed circuit board 171. The bottom surface of the heat dissipation pad 160 may have the same area as the bottom surface area of the printed circuit board 171 or may have an area smaller than the bottom surface area of the printed circuit board 171.

A connector hole 162 and a fastening hole 163 may be disposed in the heat dissipation pad 160, and a second connector 107 connected to the cable 101 may be inserted into the connector hole 162.

1 and 7, the light emitting module 170 includes a printed circuit board 171 and one or more light emitting devices 173. The printed circuit board 171 includes at least one of a resin material PCB, a metal core PCB (MCPCB, Metal Core PCB), and a flexible PCB (FPCB, Flexible PCB), for example, may be provided as a metal core PCB for heat dissipation. The metal core PCB includes a circuit pattern layer on an upper portion, a metal layer on a lower portion, and an insulating layer disposed between the metal layer and the circuit pattern layer. The thickness of the metal layer is formed to be 70% or more of the thickness of the printed circuit board 171 to improve heat dissipation efficiency, but is not limited thereto. The printed circuit board 171 may include an AC module circuit, may be selectively used in an AC power mode, or may be implemented as a DC module circuit, but is not limited thereto.

The printed circuit board 171 is disposed between the cover 190 and the heat dissipation pad 160. The printed circuit board 171 is in contact between the cover 190 and the heat dissipation pad 160. 2 and 7, the outer circumference of the printed circuit board 171 corresponds to the first guide rib 11 of the heat sink 110. The printed circuit board 171 includes a plurality of recesses 71, 72, 73, and 74, and the plurality of recesses 71, 72, 73, and 74 are outer portions of the printed circuit board 171. Can be arranged around. The plurality of recesses 71, 72, 73, and 74 may be recessed in the center direction of the printed circuit board 171. Areas of the recesses 71, 72, 73, and 74 may correspond to the cover fastening portion 121 of the heat sink 110.

The first connector 175 may be coupled to the printed circuit board 171. The first connector 175 may be coupled to at least one of an upper surface and a lower surface of the printed circuit board 171. For example, the first connector 175 may pass through a connector hole in the printed circuit board 171 and be connected to a circuit pattern on an upper surface of the printed circuit board 171. The first connector 175 may be coupled to the second connector 107 and electrically connected to the first connector 175.

The center area of the printed circuit board 171 may include a fastening hole 79. The first fastening means 108 may be fastened to the heat sink 11 through the fastening hole 79 of the printed circuit board 171 and the fastening hole 163 of the heat dissipation pad 160. Accordingly, the center side flow of the printed circuit board 171 can be prevented, and the contact area with the heat radiation pad 160 can be improved. The first fastening means 108 is a single piece, and can fix the printed circuit board 171 in a minimum number.

One or more light emitting devices 173 may be arranged in a dot shape, for example. The plurality of light emitting devices 173 may be arranged in one or more rows, for example, two or more columns. Here, each column of the light emitting device 173 may be a length direction X of the heat sink 110.

The light emitting device 173 may be implemented as two or more light emitting chips under each lens unit 191, or may be implemented in two or more packages. The light emitting chip may emit at least one of blue, red, green, and UV, and the light emitting device 173 may emit at least one of white, blue, red, and green. Can emit light.

The distance D1 between the column and the column of the lens unit 191 may be wider than the distance D2 between the rows, but is not limited thereto. The spacing D2 between the rows of the lens unit 191 may be the same as the spacing between the columns of the light emitting devices 173 when the light emitting devices 173 are arranged in two columns. The interval D1 may be a minimum interval between the centers of the lens units 191 spaced apart in the second axis direction Y, or may be a minimum interval between the centers of the light emitting elements disposed below the lens units 191 in adjacent rows. . The interval D2 may be a minimum interval between the centers of the lens units 191 spaced apart in the first axial direction X, or may be a minimum interval between the centers of the light emitting elements disposed below the lens units 191 in adjacent rows. have.

1, 7 and 8, the cover 190 may include a plurality of lens units 191. Each lens unit 191 protrudes from the cover 190 to cover each of the light emitting devices 173. Each of the lens parts 191 may include a shape having a curved surface having a different length from the first axial direction X and the second axial direction Y orthogonal to the central axis. Can provide wide. M (M≥2) pieces of the lens unit 191 may be disposed in a first axis direction, and N pieces (N≥2, M> N) may be disposed in a second axis direction.

The cover 190 may be a transparent resin material such as silicon or epoxy, glass or acrylic resin such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), cycloolefin copolymer (COC), and the like. It may include at least one of polyethylene naphtha late (PEN) resin. As another example, the cover 190 may include an opaque material according to the purpose, but is not limited thereto. The lens unit 191 may be integrally formed of the same material as the cover 190. Reflective resin may be applied to an area of the surface of the cover 190 except for the lens unit 191, thereby improving light reflection efficiency.

Referring to FIG. 10, the light emitting device 173 may match a DC voltage to the number of LEDs in case of a DC power source. However, in the case of AC driving, the number of light emitting devices 173 may vary depending on the driving voltage of the LED, but at least 16. Should be more than In the case of an AC power supply (eg, AC 220V), when the lens unit 191 of the cover 190 is disposed on one light emitting device 173, the lens units 191 of each row may be densely or in contact with each other. Therefore, optical interference between the lens units 191 may occur. For example, when six or more lens units 191 are arranged in each row of the cover 190, it may be difficult to secure a gap between adjacent lens units 191. In addition, the printed circuit board 171 may include a circuit unit (171A in FIG. 10) that is an AC circuit in a center region between a column in which the light emitting device 173 is mounted in the case of AC driving.

The lens unit 191 may be arranged in two rows on both sides of the center by arranging the circuit unit 171A on the center side of the printed circuit board 171. The size of the cover 190 may include the heat sink 110. Since the size is smaller than the size, when considering the interference between the lens unit 191, the number of the lens unit 191 can be arranged in each column is limited. For example, the size of the heat sink 110 is a lens unit that can be disposed in each row of the cover 190 when the horizontal length (X2) is in the range of 140mm to 160mm and the vertical length (Y1) is in the range of 55mm to 75mm. The maximum number of mounts 191 may be reduced, and the number of light emitting devices 173 that may be disposed in the area of the lens unit 191 of each row may increase. According to an exemplary embodiment, the number of the lens units 191 of the cover 190 may be less than six in each column, and the number of the light emitting devices 173 below each lens unit 191 may be two or more.

The plurality of lens units 191 may have a greater number of columns arranged in the first axis direction X than the number of rows arranged in the second axis direction Y. FIG. This is because when the plurality of lens units 191 are arranged in a predetermined space, for example, the plurality of lens units 191 arranged in the first axial direction X may not generate optical interference between adjacent lens units 191. It is necessary to secure the gap. In this case, the interval R5 between the lens units 191 may vary depending on the length R1 of the X-axis direction of the lens unit 191 and the height H1 of the lens unit 191.

FIG. 11 is a sectional view taken along the C-C side of the light emitting module and the cover of FIG. 10, and FIG. 12 is a sectional view taken along the D-D side of the light emitting module and the cover of FIG. 10.

11 and 12, each of the plurality of lens units 191 includes first and second emission directions 93 and 93A having a curved shape and orthogonal to the center axis Z0. The lengths R1 and R2 of the second axis direction Y may be different from each other. The emission surface 191 of the lens unit 191 may include a concave portion 93B having a curved surface having a convex emission area in the first axial direction and having a concave emission area in the second axial direction. The concave portion 93B disposed in the second axial direction of the exit surface 191 of the lens unit 191 may be disposed on one side or both sides of the second axial direction. The recess 93B may be disposed between the convex curved surfaces of the exit surface 93A in the second axial direction. The convex curved surfaces of the second axial direction may be continuously connected to the convex curved surface of the first axial direction. Here, when the recesses 93B of the exit surface 93A are disposed on both sides in the second axial direction, the depths of the both recesses 93B may be different from each other. In this case, the concave portion 93B in the direction in which the light is irradiated can be formed deeper, and the light can be irradiated with a wide direction angle distribution.

Each of the lens units 191 may be disposed such that, for example, the length R1 of the first axial direction X is greater than the length R2 of the second axial direction Y.

As illustrated in FIG. 13, each of the plurality of lens units 191 has a shape in which two convex lenses overlap with each other in a first axis direction X with respect to a center axis Z0, or two with reference to a center axis Z0. The hemispherical shape may be a shape overlapping in the first axial direction X. The lens unit 191 has a portion where the two convex lenses or the hemispherical shapes are in contact with each other outside the center area 93 of the exit surfaces 93 and 93A, that is, the second axis direction Y, or an outer portion of the overlapped shape A recess 93B recessed in the direction of the center axis Z0 may be formed. The outer shape of each of the lens units 191 may be a shape in which the peanut shell shape is cut in half in the longitudinal direction. The recess 93B may be disposed inwardly than the two hemispherical outlines 93C.

The lens unit 191 may be a convex or flat surface having a center area 93 through which the central axis Z0 passes among the exit surfaces 93 and 93A, and between the center area 93 and the edge of the lens unit 191. The side region 93A may have a curved surface having a sharp slope.

11 and 12, each of the lens portions 191 has a recess 90 recessed above the bottom 91 of the cover 190 and an incident surface 92 around the recess 90. It includes. The recess 90 may have a shape that gradually narrows toward the high point of the incident surface 92, and the incident surface 90 may have a hemispherical or aspherical shape. The bottom of the recess 90 may have a length R3 longer than the width R4. This is because the plurality of light emitting elements E1 and E2 are arranged along the bottom length R3 in the first axial direction of the recess 90, and thus may be longer than the bottom width R4. The height H2 of the recess 90 may be 1/2 or more of the height H1 of the lens unit 191, and may be disposed in a range of 1/3 to 1/2, for example. When the height H2 of the recess 90 is lower than the range, the light loss may be large, and when the height H2 is larger than the range, the light distribution in the center direction and the side direction may not be uniform. The incident surface 92 may have different curvatures between the first axis direction and the second axis direction, but is not limited thereto. The recess 90 may be filled with air, but is not limited thereto.

The length R1 in the x-axis direction of the lens unit 191 may be greater than the width R2 in the Y-axis direction, for example, 1.8 times or more, for example, in the range of 1.8 times to 2.2 times the width R2. It can be arranged as. The length R1 of the lens unit 191 is disposed longer in the range than the width R2, so that each lens unit 191 may provide a wide illumination area along the first axis direction.

The length R1 of the lens unit 191 may be 24 mm or less, for example, in a range of 20 mm to 22 mm. When the length R1 of the lens unit 191 exceeds the above range, the number of lens units 191 may be reduced or it may be difficult to secure the gap between the lens units 191. Luminance differences between an area of the unit 191 and an area other than the lens unit 191 may occur. The width R2 of the lens unit 191 is a length of the second axis direction Y orthogonal to the central axis Z0 and may be disposed in a range of 13 mm or less, for example, 9 mm or more and 12 mm or less. The width R2 of the lens unit 191 may not be considered with respect to the interval in the second axis direction Y. However, when the width R2 is smaller than the range, the shape of the lens unit 191 may be deformed. When light control may be difficult and larger than the above range, the recessed portion (93B of FIG. 13), which is a hemispherical boundary of the lens unit 191, may not be concave, and directivity using two hemispherical shapes may not appear.

The height H1 of the lens unit 191 may be disposed in a range of 1/4 or more, for example, 1 / 3.5 to 1 / 2.5 of the length R1 of the lens unit 191. When the height H1 of the lens unit 191 is lower than the range, the directivity may not be improved due to deformation of the lens shape, and the lens when the height H1 of the lens unit 191 is larger than the range Optical interference between the units 191 may occur.

The lens parts 191 may be disposed to protrude from the cover body 191A, and the cover body 191A connects the lens parts 191 in a flat sheet form. The thickness T1 of the cover body 191A may be the same as the thickness of the cover 190, 3mm or less, for example, 1mm to 2mm range, the thickness T1 of the cover body 191A may be If it is smaller than the range, moisture may penetrate and deformation problems due to expansion or contraction may occur. If the thickness T1 of the cover body 191A is larger than the above range, there is a problem in that the height H1 of the lens unit 191 increases with material loss.

Each of the lens units 191 receives light emitted from two or more light emitting elements 173 (E1 and E2) in the recess 90 and enters the incident surface 92 and refracts through the exit surfaces 93 and 93A. You will exit. Here, the lens unit 191 has the light L1 emitted to the lower region of the incident surface 92 or an edge region adjacent thereto, and the upper surface of the exit surface 93A of the lens unit 191 and the cover body 191A. When emitted to the boundary region of 95, the emitted light L1 must be refracted above the adjacent lens unit 191 to reduce the interference between the lens units 191. At this time, the first angle θ1 of the light L1 incident to the edge region of the incident surface 92 of the lens unit 191 is a horizontal axis (eg, an X axis) on the bottom 91 of the cover 191. Direction) 30 degrees or less, for example, 20 to 30 degrees, and the second angle θ2 of the light L1 emitted through the edge region of the exit surface 93A of the lens unit 191 is The upper surface 95 of the cover 191 may be greater than or equal to 30 degrees based on a horizontal axis (for example, the X-axis direction). Here, the adjacent lens unit 191 may be spaced apart from the second angle with respect to the horizontal axis. The distance R5 between the lens units 191 may be set to at least 5 mm using the second angle θ2, the height H1 and the length R1 of the lens unit 191. Here, the intervals R5 between the lens parts 191 in the first axial direction may be the same.

The interval R5 between the lens units 191 may be 1 / 5.5 or more, for example, 1/5 or more of the interval D2 between the central axes Z0 of the lens unit 191. The interval R5 may be at least 5 mm, for example, in the range of 5 mm to 7 mm. When the interval R5 is narrower than the range, optical interference between adjacent lens units 191 may occur. When the interval R5 is wider than the range, the lens unit 191 may not be mounted. have. An interval R5 between the lens units 191 may be smaller than the height H1 and the length R1 of the lens unit 191.

Here, as shown in FIG. 10, the size of the heat sink 110 is, for example, when the horizontal length (X2) is in the range of 140mm to 160mm and the vertical length (Y1) is in the range of 55mm to 75mm, the angle of the cover 190 The maximum number of mounts of the lens units 191 that may be arranged in a row may be less than six, and the lens units 191 of each row may be spaced apart by the interval R5, thereby reducing optical interference between each other.

Each of the lens units 191 may include a plurality of light emitting devices 173 (E1 and E2) arranged in one or two rows, which may vary depending on the size of the light emitting device 173. For example, when the size of the light emitting device 173 as shown in FIG. 13 is large, at least two light emitting devices 173 may be arranged in a single column. It may have a polygonal shape, for example, a square shape. As shown in FIG. 13, the interval between the lower end of the incident surface 92 and the lower end of the exit surface 93A in the X-axis direction is greater than the interval between the lower end of the incident surface 92 and the exit surface 93B in the Y-axis direction. Can be large.

15 and 16, when the sizes of the light emitting devices 173 and E3 disposed in the lens units 191 are small, 10 or more, for example, 10 to 14 light emitting devices 173 may be disposed. The size of may be a polygonal shape, for example, a square shape having a length of each side of 1mm or more, for example, 1mm ~ 1.6mm. The light emitting elements 173 in each column disposed below each lens unit 191 may be spaced at predetermined intervals to reduce interference or light loss due to heat between each other.

11 and 15 to 17, the light emitting device 173 may be disposed below the lens unit 191 in a left / right symmetrical form with respect to the center Y0 in the second axial direction. In the area S1 x S2 of the light emitting device 173 in the lens unit 191 according to the embodiment, 2 to 14 light emitting devices are arranged in one or two rows within a range of 4.5 to 5.5 mm x 10.5 mm to 11.5 mm. The plurality of light emitting devices 173 may be connected to an AC power source.

14 and 15, when the number of light emitting devices 173 and E3 under the lens unit 191 is an odd number, the light emitting device 173 is more in the outward direction than the inward direction of the lens unit 191. You can arrange the number. Accordingly, the illumination area in the outward direction of the lens unit 191 may be covered more widely.

Referring to FIG. 16, when the number of light emitting devices 173 is an even number, the light emitting devices 173 may have 12 to 16 ranges and may be arranged in two rows, and the center X0 of the first axis direction of the lens unit 191 may be disposed. And symmetrically disposed with respect to the center Y0 in the second axis direction.

Meanwhile, as shown in FIGS. 10 and 15, the centers of the lens parts 191 are disposed on a straight line in the first axis direction X, or as shown in FIG. 17, some of the lens parts are in a straight line in the first axis direction X. Can be displaced from. As illustrated in FIG. 17, the interval D11 of the lens unit 191 may be wider than the interval D2 of the rows. The center of the lens unit 191 may be arranged in each column or at least one or a plurality of them may be disposed to be shifted. For example, the lens parts 191 adjacent to the edge of the heat dissipation plate 110 may have a hot spacing D11 greater than the hot spacing D12 of the center side lens part 191. Accordingly, it is possible to further improve the illumination intensity of the corner region. That is, the spacing D11 of the outer lens unit 191 may be wider than the spacing D12 of the inner lens unit 191.

7 and 8, a cover fastening portion 194 may be disposed around the cover 190, and a fastening hole 99 may be disposed in the cover fastening portion 194. The second fastening means 109 may be fastened through the fastening hole 42 of the waterproof frame 140 and the fastening hole 12A of the heat sink 110.

The cover 190 includes a first housing 192 and a second housing 193, and the first housing 192 is provided for the first connector 175 of the printed circuit board 171. The second receiving part 193 protrudes for the first fastening means 108 fastened to the printed circuit board 171. The first and second storage parts 192 and 193 may protrude to different heights.

The heat dissipation pad 160 and the light emitting module 170 may be stacked in the recess region 112 of the heat sink 110 according to the embodiment, and then fastened by the first fastening means 108. The waterproof frame 140 is coupled to the circumference of the recess region 112, the cover 190 is coupled to the light emitting module 170 and the waterproof frame 140, and the second fastening means 109 is the cover. The 190 is fastened to the heat dissipation plate 110. Accordingly, it can be combined into the lighting module 100 as shown in FIG.

As illustrated in FIG. 8, an identification unit 195 may be disposed at a portion of the edge of the cover 190. The identification unit 195 may have a directivity and may be coupled to the identification protrusion 117 of the heat sink 110.

1 and 8, the cover fastening portion 194 of the cover 190 may be formed to a thickness thicker than the thickness of the cover 190. Accordingly, when the second fastening means (109 of FIG. 1) is fastened to the cover fastening portion 194, the cover fastening portion 142 of the waterproof frame 140 may be effectively pressed.

The lighting module 100 may prevent moisture from penetrating into the light emitting module 170. The lighting module 100 may be mounted in an outdoor lighting device, and may improve and provide a portion vulnerable to moisture.

As shown in FIG. 19, a lower protrusion 197 may be disposed in a predetermined area of the lower surface of the cover 190. The lower protrusion 197 may protrude from the lower surface of the cover 190 in the upper surface direction of the printed circuit board 171. The lower protrusions 197 may be arranged in one or plural. The lower protrusions 197 are members for pressing the printed circuit board 171 toward the heat dissipation plate 110 and may be formed of the same elastic material as the cover 190. The lower protrusion 197 may be disposed closer to the outer region than to the center region of the heat sink 110.

The lower protrusion 197 may press the both side regions of the printed circuit board 171 toward the heat dissipation plate 110 when the cover 190 is fastened, thereby bringing the heat dissipation pad 160 into close contact. The center area of the printed circuit board 171 may be fastened by a single first fastening means 108, and both areas of the center may be pressed by the lower protrusion 197. Accordingly, the contact area between the printed circuit board 171 and the heat dissipation pad 160 may be increased, and moisture penetration may be prevented.

20 is a plan view of the lighting module of FIG. 10, and FIG. 21 is a bottom view of the lighting module of FIG. 10. 20 and 21, some fins arranged in the edge region of the heat sink 110 among the heat sink fins 113 of the heat sink 110 according to the embodiment may be exposed to the outside of the heat sink 110. For example, as shown in FIG. 21, the heat dissipation fins 113 may include a first heat dissipation fin 113A not exposed on the top view of the lighting module 100 and a second heat dissipation fin 113B exposed on the top view. Can be distinguished. Alternatively, the heat dissipation fins 113 may be divided into a first heat dissipation fin 113A having no gap portion at the top and a second heat dissipation fin 113B having the gap portion at the top.

As shown in FIG. 20, the heat dissipation plate 110 includes a first heat dissipation path formed by a region between the heat dissipation fins 113 arranged at a lower portion thereof, and the gap portions 22A, 22A, 23A, and 24A in the outer direction of the heat dissipation plate 110. ), A second heat dissipation flow path can be provided. The first heat dissipation channel may be arranged in a direction in which the heat dissipation fins 113 cross each other by a dot-shaped matrix structure. The heat dissipation plate 110 may include protrusions 21, 22, 23, and 24 disposed on at least two side surfaces or opposite sides of each other. The protrusions 21, 22, 23, and 24 may extend from the heat dissipation fins 113. The protrusions 21, 22, 23, and 24 will be described in a structure disposed on side surfaces of the heat sink 110, respectively. The protrusions 21, 22, 23, and 24 may be disposed in an area of the lighting module 100 or in an area of the heat dissipation plate 110. An area between the protrusions 21, 22, 23, and 24 may be a second heat dissipation flow path, and may be an area of the gaps 21A, 22A, 23A, and 24A. The gaps 21A, 22A, 23A, and 24A may provide second heat dissipation paths on each side surface of the heat sink 110. The width D3 of each of the gaps 21A, 22A, 23A, and 24A may be wider than the width D6 of the protrusions 21, 22, 23, and 24, and the gaps 21A, 22A. Depth D5 of 23A and 24A may be smaller than the width D6. In this case, when the heat dissipation fin 113 has a square columnar shape, the width D6 of each of the protrusions 21, 22, 23, and 24 is equal to the top width of the heat dissipation fin 113.

The protrusions 21, 22, 23, and 24 may include first to fourth protrusions 21, 22, 23, and 24. The first and second protrusions 21 and 22 may protrude to both sides of the first axial direction X or the longitudinal direction of the heat sink 110. The first and second protrusions 21 and 22 may be disposed in an area R3 between the first case fastening part 118 or the second case fastening part 119 and the third and fourth protrusions. 23 and 24 may be disposed in an area R4 between the first and second case fastenings 118 and 119. The third and fourth protrusions 23 and 24 protrude to both sides of the second axial direction Y or the width direction of the heat sink 110, and an area R4 between the cover coupling parts 194 of the cover 190. Can be placed in. The number of the third protrusions 23 may be disposed three times or more, for example, four times or more than the number of the first protrusions 21. The number of the third protrusions 23 may be larger than the number of light emitting devices 173 in each column. The protrusions disposed at two adjacent sides of the heat sink 110 may be arranged in different numbers.

At least one or both of the first to fourth protrusions 21, 22, 23, and 24 may have a period D4 of adjacent protrusions narrower than a distance D2 between the lens parts 191, thereby improving heat dissipation efficiency. I can let you.

As shown in FIG. 20, each of the second guide ribs 12, 13, 14, and 15 is connected to two or more protrusions at the first to fourth protrusions 21, 22, 23, and 24, thereby improving heat dissipation efficiency. It can be improved.

22 to 24, the lighting module 100 may be defined as a unit module. Two or more such unit modules may be arranged. For example, when two or more unit modules are arranged in the width direction Y, they may be in contact with each other. When the lighting module 100 is arranged in close contact with each other in the width direction and fastened to a part of the case 210 through the first and second case fastening parts 118 and 119, both sides of the lighting module 100 are in contact with each other. . In this case, the protrusions 23 and 24 disposed on the side surfaces of the lighting module 100 may contact each other with the protrusions 23 and 24 of the other lighting module. When the plurality of lighting modules 100 are arranged, air may flow through the gaps 21A, 22A, 23A, and 24A disposed on the side surfaces of each lighting module 100. In addition, the gaps 23A and 24A between the protrusions 23 and 24 disposed in the boundary regions 180 between the respective lighting modules 100 are doubled to correspond to each other, and these gaps 23A and 24A are provided. Since air P1 flows as shown in FIG. 19, the heat radiation efficiency may be increased. That is, when the lighting module 100 is installed in the width direction, effective heat dissipation may be achieved by the gaps 21A, 22A, 23A, and 24A provided in the boundary region 180 of each lighting module 100. In addition, by arranging the lighting modules 100 in close contact with each other, space utilization of the lighting device may be easy.

In addition, the plurality of lighting modules 100 are in close contact with each other, so that the intervals D1 between the columns of the light emitting devices are arranged at equal intervals, thereby not affecting the light distribution distribution in each light emitting module 100 and the lighting device having the same.

In addition, as shown in FIG. 23, since the intervals D1 between the rows of the light emitting devices or the columns of the lens unit 191 of the cover 190 are arranged in the same manner, the heat radiated from the light emitting devices can be uniformly radiated.

The lighting module or the lighting apparatus according to the embodiment may be applied to a device similar to an indoor light, a street lamp, various lamps, a signboard, a headlamp, and the like by lighting indoors or outdoors.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

In addition, the above description has been made with reference to the embodiment, which is merely an example, and is not intended to limit the present invention. Those skilled in the art to which the present invention pertains will be illustrated as above without departing from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

The lighting module according to the embodiment may be used in various lighting devices.

The lighting module according to the embodiment may be used as lighting of an indoor or outdoor lighting fixture.

Claims (20)

A light emitting module having a plurality of light emitting elements on a printed circuit board and a printed circuit board; And A cover having a cover body disposed on the printed circuit board and a plurality of lens units disposed on the light emitting device; The plurality of lens units may be arranged such that an interval in a first axis direction is smaller than an interval in a second axis direction.  Each of the plurality of lens units includes a concave recess, an exit surface having an entrance surface around the recess, and a curved surface having a convex surface. Two or more light emitting elements disposed in each lens unit are arranged in a first axis direction, The bottom of the recess has a length in the first axial direction longer than the length in the second axial direction relative to the bottom center of the recess. The output surface of the lens unit has a length in the first axis direction is longer than a length in the second axis direction, The emission surface has a convex surface convex in the first axial direction, the illumination module comprising a concave portion in which the curved surface in the second axial direction is concave in the recess direction. The lighting module of claim 1, wherein 2 to 14 light emitting elements are disposed in the lens units. 3. The lighting module of claim 2, wherein the light emitting devices disposed in each lens unit have a larger number of outer rows than the inner rows relative to the first axis direction passing through the bottom center of the recess. The illumination module according to any one of claims 1 to 3, wherein a distance between the lens units arranged in the first axial direction is smaller than a height of the lens unit. The illumination module according to any one of claims 1 to 3, wherein a distance between the lens units arranged in the first axial direction is smaller than a length in the first axial direction of the lens unit. The lighting module according to any one of claims 1 to 3, wherein the lens parts have the same spacing between the first axial directions and at least one of the lens parts having different spacings in the second axial direction. According to any one of claims 1 to 3, The light incident at a first angle through the edge region of the incident surface of the lens unit is emitted at a second angle to the edge region of the exit surface, The first angle is the angle incident on the horizontal plane to the bottom surface of the cover body as a reference, The second angle is an angle emitted based on an axis horizontal to the upper surface of the cover body, And the second angle is greater than the first angle. The lighting module of claim 1, wherein the lens units adjacent in the first axis direction are spaced apart from each other with an angle smaller than the second angle with respect to a horizontal axis. The lighting module according to any one of claims 1 to 3, wherein the printed circuit board has a circuit unit for alternatingly driving the light emitting element. The heat sink according to any one of claims 1 to 3, further comprising: a heat dissipation plate having a plurality of heat dissipation fins at a lower portion thereof and a recess region at an upper portion thereof; And a waterproof frame disposed outside the printed circuit board on the heat sink, The printed circuit board is disposed in the recess area of the heat sink, The waterproof frame is a lighting module disposed between the heat sink and the cover. The lighting module of claim 10, wherein the waterproof frame comprises a first waterproof protrusion protruding in the cover direction and a second waterproof protrusion protruding in the heat sink direction. The lighting module of claim 10, wherein the heat sink includes a first guide rib disposed between the waterproof frame and the printed circuit board, and a second guide rib disposed outside the waterproof frame and the cover. The lighting module of claim 11, further comprising a heat dissipation pad disposed between the printed circuit board and the heat sink. A heat sink having a plurality of heat dissipation fins; A light emitting module having a printed circuit board on the heat dissipation plate and a plurality of light emitting elements on the printed circuit board; And A cover having a cover body disposed on the printed circuit board and a lens unit disposed on the light emitting element; The printed circuit board has a length in a first axial direction longer than a length in a second axial direction, At least two light emitting devices are disposed in each of the plurality of lens units. M lenses are arranged in the first axis direction and N pieces in the second axis direction, and M≥2, N≥2, and M> N, The plurality of lens units may be arranged such that an interval in a first axis direction is smaller than an interval in a second axis direction.  Each of the plurality of lens units includes a concave recess, an exit surface having an entrance surface around the recess, and a curved surface having a convex surface. Two or more light emitting elements disposed in each lens unit are arranged in a first axis direction, The bottom of the recess has a length in the first axial direction longer than the length in the second axial direction relative to the bottom center of the recess. The output surface of the lens unit has a length in the first axis direction is longer than a length in the second axis direction, The emission surface has a curved surface convex in the first axial direction, the lighting module including a concave portion concave in the recess direction on at least one of both sides of the second axial direction. The lighting module of claim 14, wherein the heat sink and the printed circuit board have a length in a first axis direction longer than a length in a second axis direction. The lighting module of claim 14, wherein a thickness of the cover body is smaller than a height of the recess and larger than a thickness of the light emitting element. The illumination module according to any one of claims 14 to 16, wherein the exit surface of each lens unit has a symmetrical shape with respect to a second axis direction passing through a bottom center of the recess. The illumination module according to any one of claims 14 to 16, wherein the concave portion is disposed on at least one side of both sides of the emission surface in the second axial direction. The recess according to any one of claims 14 to 16, wherein the recesses are adjacent to the cover body and are disposed on both sides of the exit surface in the second axial direction, respectively. Illumination module having a different depth of the recesses disposed on both sides of the exit surface. 17. The apparatus of claim 14, further comprising: a watertight frame disposed between the heat sink and the cover; And A heat dissipation pad disposed between the printed circuit board and the heat dissipation plate, The printed circuit board is disposed between the heat dissipation pad and the cover, The waterproof frame includes a first waterproof protrusion projecting toward the printed circuit board and a second waterproof protrusion projecting toward the heat sink. The heat sink includes a first guide rib disposed between the waterproof frame and the printed circuit board, and a second guide rib disposed outside the waterproof frame and the cover.

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